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Table 1 Density of pigs, details of study population and hepatitis E virus seroprevalence by study centre

From: Hepatitis E virus seroprevalence among the general population in a livestock-dense area in the Netherlands: a cross-sectional population-based serological survey

Study centre Density of pigsa Number of participants Median age (years) Range (years) Male participants (%) Seroprevalenceb (%) [95% CI]c
Afferden 717 49 59.2 [33.5–71.1] 57.5 25.5 [13.1–38.0]
Astend 3,535 291 61.4 [20.4–71.4] 45.8 34.0 [28.6–39.5]
Bakel 3,756 315 59.3 [21.5–71.7] 47.1 29.2 [24.1–34.3]
Boxtel 988 170 59.3 [24.8–71.6] 45.0 27.2 [20.5–33.9]
Budel 1,080 200 61.4 [21.4–71.6] 49.5 32.6 [25.8–39.4]
Deurne 3,882 132 60.5 [29.0–71.7] 50.0 18.6 [11.7–25.4]
Heeswijk-Dinther 3,812 375 57.5 [20.1–71.4] 37.1 30.1 [25.5–34.8]
Heusdend 3,535 72 58.9 [24.2–71.4] 55.6 16.7 [8.1–25.3]
Horn 1,268 85 57.1 [24.0–71.7] 45.2 35.7 [25.5–46.0]
Someren 3,447 170 57.9 [28.6–71.2] 48.2 29.4 [22.6–36.3]
St. Anthonis 4,460 399 57.0 [22.6–71.8] 44.5 26.9 [22.4–31.4]
Stramproy 878 236 57.4 [21.3–72.0] 46.3 26.6 [20.9–32.4]
Total 2,506 2,494 58.6 [20.1–72.0] 45.6 28.7 [26.9–30.5]
  1. aNumber of pigs per km2 by municipality, based on the provincial databases of mandatory environmental licenses for keeping livestock for 2012
  2. bAnti-HEV IgG ratio > = 0.90
  3. c95% Confidence Interval
  4. dAsten and Heusden are both situated in the municipality Asten, and therefore have the same pig density